HP has launched an updated model of its Envy 15 notebook with AMD's hot-off-the-press Mobility Radeon HD 5800 GPUs. Starting at $1,300 – a $400 price drop – the Envy 15 ships with a 15.6" (1366x768) LED display, a 2.4GHz Core i5-520M processor, 4GB of DDR3 RAM, a 1GB Mobility Radeon HD 5830, a 320GB 7200RPM HDD, 802.11n Wi-Fi, a webcam, a six-cell battery and Windows 7 Home Premium 64-bit.

Available upgrades include a 1080p display, Core i7 processors, up to 16GB of RAM, dual 160GB SSDs, an external Blu-ray drive and more – but those additions quickly add up. HP has also introduced a $300 cheaper Envy 13, with new specs including a 1.6GHz Core 2 Duo SL9300, a 512MB AMD Mobility Radeon HD 4330, and a four-cell battery.